Noch ein paar Ergänzungen für das Publizieren von Assoziationen.

git-svn-id: https://svn.libreccm.org/ccm/trunk@1558 8810af33-2d31-482b-a856-94f89814c4df

ccm-cms/src/com/arsdigita/cms/AssociationCopier.java

@@ -1,6 +1,5 @@
 package com.arsdigita.cms;
 
-import com.arsdigita.domain.DomainObject;
 import com.arsdigita.persistence.metadata.Property;
 
 /**
@@ -10,11 +9,29 @@ import com.arsdigita.persistence.metadata.Property;
  */
 public interface AssociationCopier {
 
-    boolean copyReverseProperty(CustomCopy source, 
+    /**
-                                DomainObject target,
+     * <p>
-                                Property property,                                
+     * Return the property which is handled by this implementation. Format:
-                                DomainObject value,
+     * </p>
-                                ItemCopier copier);
+     * <p>
-    
+     * {@code $type::$property}
+     * </p>
+     * <p>
+     * Where {@code $type} is the fully qualified name of the class/type owing 
+     * the property and {@code property} is the name the property. Example
+     * </p>
+     * <p>
+     * {@code com.arsdigita.cms.contenttypes.GenericPerson::publications}
+     * </p>
+     * <p>
+     * This indicates that the implementation handles a property 
+     * {@code publications} added to the {@code GenericPerson} type by some
+     * module via an PDL association.
+     * </p>
+     * 
+     * @return 
+     */
+    String forProperty();
 
+    boolean copyProperty(CustomCopy source, Property property, ItemCopier copier);
 }

ccm-cms/src/com/arsdigita/cms/AssociationCopierLoader.java

@@ -0,0 +1,77 @@
+package com.arsdigita.cms;
+
+import com.arsdigita.persistence.metadata.Property;
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.log4j.Logger;
+
+/**
+ *
+ * @author Jens Pelzetter
+ * @version $Id$
+ */
+public final class AssociationCopierLoader {
+
+    private static final AssociationCopierLoader INSTANCE =
+                                                 new AssociationCopierLoader();
+    private static final Logger logger =
+                                Logger.getLogger(AssociationCopierLoader.class);
+    private Map<String, AssociationCopier> copiers =
+                                           new HashMap<String, AssociationCopier>();
+
+    private AssociationCopierLoader() {
+        final String[] assocCopierNames = CMSConfig.getInstance().
+                getAssocCopiers();
+
+        for (String assocCopierName : assocCopierNames) {
+            loadAssocCopier(assocCopierName);
+        }
+    }
+
+    private void loadAssocCopier(final String name) {
+        final Class<?> clazz;
+        try {
+            clazz = Class.forName(name);
+        } catch (ClassNotFoundException ex) {
+            logger.warn(String.format("No class found for name '%s'. Skiping.",
+                                      name),
+                        ex);
+            return;
+        }
+
+        if (clazz.isAssignableFrom(AssociationCopier.class)) {
+            try {
+                final AssociationCopier copier = (AssociationCopier) clazz.
+                        newInstance();
+                
+                copiers.put(copier.forProperty(), copier);
+            } catch (InstantiationException ex) {
+                logger.warn(String.format(
+                        "Failed to instaniate copier '%s'. Skiping.",
+                        name),
+                            ex);
+            } catch (IllegalAccessException ex) {
+                logger.warn(String.format(
+                        "Failed to instaniate copier '%s'. Skiping.",
+                        name),
+                            ex);
+            }
+        } else {
+            logger.warn(String.format("Class '%s' is not an implementation of "
+                                      + "the AssociationCopier interface. "
+                                      + "Skiping",
+                                      name));
+        }
+    }
+
+    public static AssociationCopierLoader getInstance() {
+        return INSTANCE;
+    }
+
+    public AssociationCopier getAssociationCopierFor(final Property property,
+                                                     final CustomCopy source) {
+        return copiers.get(String.format("%s::%s",
+                                         source.getClass().getName(),
+                                         property.getName()));
+    }
+}

ccm-cms/src/com/arsdigita/cms/CMSConfig.java

@@ -621,6 +621,14 @@ public final class CMSConfig extends AbstractConfig {
             Parameter.REQUIRED,
             true);
     
+    /**
+     * Copiers for associations not known yet. For example for associations
+     * with the generic types defined in this module from another module.
+     */
+    private final Parameter m_assocCopiers = new StringArrayParameter("com.arsdigita.cms.publish.association_copiers",
+                                                                     Parameter.REQUIRED,
+                                                                     new String[]{});
+
     // ///////////////////////////////////////////
     // publishToFile package related parameter
     // ///////////////////////////////////////////
@@ -704,6 +712,7 @@ public final class CMSConfig extends AbstractConfig {
 
         register(m_useOldStyleItemLifecycleItemPane);
         register(m_threadPublishing);
+        register(m_assocCopiers);
 
         // publishToFile package related parameter
         // Moved to publishToFile.PublishToFileConfig as of version 6.0.2
@@ -1122,4 +1131,8 @@ public final class CMSConfig extends AbstractConfig {
     public Boolean getThreadedPublishing() {
         return (Boolean) get(m_threadPublishing);
     }
+    
+    public String[] getAssocCopiers() {
+        return (String[]) get(m_assocCopiers);
+    }
 }

ccm-cms/src/com/arsdigita/cms/ContentItem.java

@@ -1947,6 +1947,14 @@ public class ContentItem extends VersionedACSObject implements CustomCopy {
             }
         }
 
+        final AssociationCopierLoader assocCopierLoader =
+                                      AssociationCopierLoader.getInstance();
+        final AssociationCopier assocCopier = assocCopierLoader.
+                getAssociationCopierFor(property, source);
+        if (assocCopier != null) {
+            return assocCopier.copyProperty(source, property, copier);
+        }
+
         return false;
     }